/ Thesaurus / P Synonyms of pierre de fermat Find synonyms for: Noun1. Fermat, Pierre de Fermatusage: French mathematician who founded number theory; contributed (with Pascal) to the theory of probability (1601-1665)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: respite Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language